4OM-996-007 - 第408页

• Checkpoints on T ape Feeder Fig. 4B33 Fig. 4B34 5.2 Troubleshooting on Pick-Up Errors 0305-001 2-224 AIM01ETRP

(2) Frequent Pick-Up Errors on Specific Feeder Slot No.

Fig. 4B32

(a) See Figs. 4B34 and 4B35 on the next page for the check-

points on tape feeders.

(b) When a tape feeder loaded with different components is

installed, the pick-up position must be checked and the off-

set data "Feeder-B" must be cleared or modified for the

new components after program change operation because

it is prepared for the previous components.

5.2 Troubleshooting on Pick-Up Errors

0305-001 2-223 AIM01ETRP

Note

• Checkpoints on Tape Feeder

Fig. 4B33

Fig. 4B34

5.2 Troubleshooting on Pick-Up Errors

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5.3 Troubleshooting on Placement Errors

5.3.1 Cause and Remedy of Placement Errors

(1) Positional and Angular Deviations of Component Placement

(1-1) Situational Grasp of Error Generation

Positional and angular deviations may be generated in either Process C

or D and E.

See Fig. 4B29.

By placing a component on the P.C.B. where a double-faced adhesive

tape is affixed, it can be checked and determined in which process po-

sitional and angular deviations are generated.

When a positional deviation is generated on the double-faced tape, it

indicates that positional and angular deviations occur in Process C.

When no positional deviation is generated, it means that positional and

angular deviations occur in Process D or E.

(1-2) Positional and Angular Deviations in Process C

When a positional deviation is generated due to the movement of the

head after component recognition or a rotational deviation by placement

angle correction, the deviation may be caused mainly by the following

two factors.

• Deterioration of Vacuum Suction Force

• Vibration or Shock during Nozzle (Head) Movement

When one of the above factors exists, unstable components (compo-

nents that cannot be picked up in stable condition) such as those shown

in Fig. 4B36 are directly affected.

When a positional deviation is generated on the components (the com-

ponents of the same type that have been used in the past actual pro-

duction), check for the above-described factors.

As for vacuum suction force, check the nozzle and the vacuum line.

As for vibration during nozzle movement, check the related spots in the

range of Process C.

Fig. 4B35 Easily-Dislocated Components during Placement (Example 1)

5.3 Troubleshooting on Placement Errors

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